Ship construction.



No. 884.234. I PATEN TED OCT. 23 G. M. HARROWAY & W. DIXON.

SHIP CONSTRUCTION. APPLIOATION FILED,JAN.13,1905.

2 SHEETS-SHEET 1.

G. M. HARROWAY & W. DIXON.

SHIP CONSTRUCTION.

APPLICATION FILED JAN.13,1905.

2 SHEETS-SHEET 2.

Q 0 B O U D i 00 siding at UNITED STATES GEORGE MITCHELL HARROWAY 4ND WAYNMAN. DIXON,

. BROUGH, ENGLAND.

PATENT OFFICE.

or MIDDLES- SHIP CONSTRUCTION.

To all whom it may concern:

Be it known that we, GEORGE MITCHELL HARROWAY andWAYNMAN DIXON, subjects of the Kinglpf Great Britain and Ireland, re-

'ddlesbrough, in the county of York, En land, have invented Im rovements in S 'p Construction, of which t e following is aspecification.

This invention has for its object to improve.

the construction of ships of the type wherein there are longitudinal water-tight side chambers in the upper part of the ship.

With a ,VIG'W ofproducing a ship of the type mentioned that will possess, inter alia, great longitudinal and transverse strength we in the construction thereof rovide at each side of the shi what we cal cantaliver-frames, in eac of which a frame-bar,

I and which extendsEup to form part of the framing of the corresponding top side chamber, is suitably secured'at its lower end to the bottom, and there is riveted to the frame-bar the lower pprtion of a reverse angle-bar.

whose upper portion inclines inwardly from the frame-bar up toward the deck and has riveted to it the inner side plating of the top side chamber.

In order to enable the reverse bar to be riveted as required to the top chamber side platingthe reverse bar hasa twistof a q'uarter of a revolution (ninety degrees) between where it is attached to the frame-barand the part in question. The height to which the attachment of the reverse bar to-the framebar will be carried will depend upon the de-' sign and the urpose of the vessel.

The top si e chamber or chambers at each side of the vessel is or areformed' part1 by the skin or shell plating and partly by oreand-aft plating. This-- plating comprises, first, a deck portion which extends between the upwardly-diverging portions of the framebars' and reverse bars and-is supported by appropriate deck-beams each extending between and rigidly secured to the upper ends of a frame-bar and a reverse barysecond, a side portion which is riveted to the inwardlyinclined upper portions of the reverse-bars, and, third, a bottom portion which-extends outwardly from the side portion to the framebars and is suitabl securedto theshell, as by d aft angle-bars, which are inserted in gaps made in the inwardly-pro- V Specification of Letters Patent. 7 Application filed January 13. 1905. Serial No. 240,9'04.

Patented Oct. 23, 1906.

j ecting flanges of the tram e-bars and are riv eted to the shell. The bottom portion ofthe plating which is riveted'as aforesaid to the inwardly-diverging portions of the reverse bars is supported by bracket-knees riveted to the inwardly-projecting flanges of the framebars and to angle-bars riveted to thebottom portion of the plating. r

In order that others skilled in the art may be enabled to make and use our invention, we now proceed to more fully describe the same with referenceto the accompanying illus trative drawings, whereof Figure 1 is a cross-sectional view of one side of a ship, showing one form of our invem tion. Fi 1 is a slmilar view showing a inodificatlon of certain features of the invention. Fig. 2 is a horizontal section on the line AA of Fig. '1".

1. 4 is a 0 Fig. 1?. Fig. 5 is a perspective view drawn to a larger scale than Fi s. 1 to 4, inclusive, showing portions ofa ame-bar and a reverse-bar at and near their point of divergpnce and parts of the stringer-bar and of t e. fore-and-aft plating attached thereto.

Fi 3 is a-horizontal section on line B B of i horizontal section on-thehne O O In each cantaliver-frame. a is a frame-bar secured at its lower end to the bottom and havin riveted to it the corresponding portion 0 the skin or shell platingb of vthe vessel,

the bar and plating extending 'ilpward and formin the outer wall of the corresponding top si' e chamber 0. i To the left in;Fig. 1

one mode of attachin the frame-bars a to or convenient form of such attachment may be adopted in building a ship according to this invention.

f hrepresent a reverse angle-bar. Its lower portion f is riveted to the frame-bar a and its upper ortion h inclines inwardly from the framear an up toward the deck '5 and 'has riveted to it the plating 7', so that the bars and latingform the inner side wall of said chamk is a twist of, say, ninety degrees in the reverse barfh to enable the top side plating to be riveted to said bar. a

As already stated, the height to which the attachment of the reverse bar f h to the frame-bar a will be carried Will depend upon the desi n and purpose of the vessel.

i is a eck-plating n, deck-beams'supporting said plating and each'extending between and rigidly secured to the up er ends of a frame-bar a and a reverse-bar h. p is abottomportion of plating. It extends outwardly from the side portion 1 to the bars a, and are rivete'dto the shell b, the bottom portion 1) of the 1plating j which is riveted, as aforesaid, to t e inwardly-divergin ortions h of the reverse-bars is supporte by bracket-knees't, riveted to the inwardly- I i projecting flanges of the frame-bars a and to angle-bars u, riveted to the bottom portion p of the plating. For strengthening purposes gusset or web plates 12 or corner-bracket plates to are secured in the chambers c between the upwardly-diverging portions of the frame-bars a, and of the reverse-bars f h.

The upper portions of inwardlyrojecting cantaliver-frames at opposite si es of the ship are connected together where required by light thwartship-girders m, Fig. 1, abut- 2'5 ting against their inner ends, and 1n this way a double cantaliver structure of great transverse strength is produced. The fore-andaft plating t j p of the top side chambers and the cantaliverframes form on each side of the ship a box-girder which overhangs the hold and eveniwhere cantaliverframes are opposite to ahatchway, and conse uently Without a connecting-beam as, is 0 such strength as in many cases to obviate the necessityfor any pillaring, and so provides an absolutely clear hold. It will be seen that each cantaliver-frame is continuous from the double bottom eor floor plate to the to of the corresponding top side chambeiybot at the outer side of the latter and at the inner side thereof. a

The water-tight chambers c, constructed as described, besides adding greatly to the strength of the ship and being available, if required, for water ballast, are of great advantage when empty (except of course as regards air) and the ship is loaded, and in such case will give additional buoyancy to the fiat we claim is I i 1. In a ship construction, a plurality of transverse cantaliver-frames which form the main framing of the ship and are arranged at the sides thereof and to which the skin may be secured and each-of which comprises an outside stiflening flanged member, an in weirdly-diverging flanged member secured to said outside member at the bottom thereof and twisted intermediate of its length to receive the platin of a to side water-tight chamber, and a tiird mem er connecting the tops of the aforesaid members.

2. In a ship construction the combination with a plurality of transverse cant'aliverconnecting toge 6 frames forming the main framing of the ship and arranged at the sides thereof and each comprising an outside frame-bar, a twisted angle-bar seured below its twists to said frame-bars and divergent therefrom above its twist, and a connecting-bar for the aforesaid divergent bar's, of longitudinal platin secured to the divergent portions of said frames and forming with the deck-plating a continuous chamber suitable for containing water-ballast.

3. In a ship construction the combination with a plurality of transverse cantaliverframes forming the main framing of the shi and arranged at the sides thereof and eac comprising an outside flanged member having a gap made in its inwardly-projecting flange to receive a fore-and-aft stringer-bar, an inwardly-divergenttwisted flanged member secured to said outside member, and a third connecting member for aforesaid members, of longitudinal plating secured to the outer sides of the inwardly-divergent members and to the outsides of the outside members, decklating secured to the connecting members 0 the cantal'iver-frames, stiffeningplates connecting the divergent parts of the frames, angle-bars connectin said stiffeningplates to thelongitudinal plating, andlon itudinal stringer-bars located in the gaps o the outside members of the cantaliver-frames.

4. A ship having top side water-tight chambers and comprisin side frames each of which has an upwar y-extending lower part and a part extending inwardly and upwardly from said'lowerpart, skin-plating riveted to said lower art and extending upwardly therefrom to orm the outer wall of the corresponding water-tight chamber, foreand-aft plating riveted to said inwardl and upwardly extending part and secure in a water-t ht manner to said skin-plating above w -ere said inwardly and upwardly extending art diverges from said upwardly-extending part, an upwardly-extending bar located 'o 'osite to said inwardly diver ing part an aving said skin-platin rivete to it above where said fore-an -aft p ating is sec'ured to said skin-plating, deck-plating secured in a water-tight manner to said oreand-aft plating and to said skin-plating transverse stiffening means secured to said fore-and-aft plating, said deck-plating, and said skin-plating, and thwartship-girders t er the upper parts of the cantaliver structures thus formed on opposite sides of the vessel and forming struts so as to enable pillars and cross ties in the hold to be dispensed with.

Signs at Middlesbrough this 29th day of December, 1904.

GEORGE MITCHELL HAIRROWAY. WAYNMAN DIXON. Witnesses:

L. R. THOMSON, HENRY Lrsrnn. 

